866315513668 has 24 divisors (see below), whose sum is σ = 1653930270720. Its totient is φ = 393766636320.

The previous prime is 866315513659. The next prime is 866315513671.

866315513668 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071805 + ... + 1697467.

It is an arithmetic number, because the mean of its divisors is an integer number (68913761280).

Almost surely, 2^866315513668 is an apocalyptic number.

It is an amenable number.

866315513668 is a deficient number, since it is larger than the sum of its proper divisors (787614757052).

866315513668 is a wasteful number, since it uses less digits than its factorization.

866315513668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657147 (or 657145 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 58.

The spelling of 866315513668 in words is "eight hundred sixty-six billion, three hundred fifteen million, five hundred thirteen thousand, six hundred sixty-eight".